FMT_USE_CPP11 option pollutes build flags with '-std=c++11' #366
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When included (with add_subdirectory),
FMT_USE_CPP11
option pollutes build flags with-std=c++11
. If master project hasset(CMAKE_CXX_STANDARD 14)
, then compilation flags become-std=c++11 -std=gnu++14
.Enable
FMT_USE_CPP11
by default only whenMASTER_PROJECT
isON
, otherwise inherit from master project.